Pea or bean thrasher



W. H. GRAYSON. PEA OR BEAN THRASHBR.

(No Model.)

Patented Apr. 5

WITNESSES UNITED STATES PATENT OFFICE.

WILLIAM HENRY GRAYSON, "OF CARTER, TEXAS.

PEA OR BEAN THRASHER.

SPECIFICATION forming part of Letters Patent No. 472,452, dated April 5, 1892.

Application filed August 7, 1891.

To all whom it may concern:

Be it known that I, WILLIAM HENRY GRAY- SON, a citizen of the United States, and a resident of Carter, in the county of Parker and State of Texas, have invented certain new and useful Improvements in Pea or Bean Thrashers; and I do hereby declare that the following is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in WhlCl1- Figure 1 is a side elevation of my improved machine for thrashing and cleaning peas'and beans. Fig. 2 is a plan view of the same with the top or cover removed Fig. 3 is a longitudinal sectional view on the vertical plane indicated by the broken line marked :1: 0c in Fig. 2, and Fig. 4 is an end elevation.

Like letters of reference denote corresponding parts in all the figures.

Theinvention relates to machines for thrashing and cleaning peas and beans; and myimprovement consists in the novel construction and combination of parts, which will be hereinafter more fully described,and particularly pointed out in the claim.

Referring to the drawings, the letter A designates the main frame or bottom frame, and B the corresponding rectangular and removable top frame, which is fastened at opposite ends to the bottom frameAby means of hooks to and staples b. By simply unhooking these the entire top may be lifted off.

Within the bottom'frame A is placed the longitudinally-inclined chute O, terminating in a contracted outlet or spout c at the discharge end of the machine. Above the highest or most elevated end of chute C is the thrasher-concave D, Within which the thrashing-cylinder E revolves, both the stationary concave and the revolving cylinder being armed with teeth or heaters, (shown, respectively, at d and 6,) as usual.

The thrashing-concave is cut away at one side near the bottom, as shown at F, forming an outlet down into the chute 0. Between the concave and the transverse slanting diaphragm G is an air-chamber H, of approximately triangular shape in cross-section,said

Serial No. 101,999. (N0 model.)

diaphragm G, in conjunction with the curved end piece I, forming the fan-chamber J, within which the fan or winnower K revolves, the journals of both the fan and the thrashingcylinder being boxed in the sides of the main frame A.

The rectangular removable top frame B has at one end, above the thrashing concave and cylinder, a semi-cylindrical hood L, and above the fan and fan-chamber a similarbut larger semicylindrical hood or housing M. The former hood L has an opening Z on one side covered by an adjustable slide N and provided with a hopper O for feeding the peas or beans into the thrashing-concave. By adjusting the slide N the feed of the contents of the hopper into the machine may be regulated at will.

The triangular air-chamber H is provided on opposite sides near its top with an aperture h for a purpose hereinafter explained. In operation the pods, shells, and heavier particles are blown out at the chute at its rear end, as indicated by the arrows, while the thrashed and cleaned peas or beans will drop down upon the inclined chute by gravity and be discharged at c. Itwill be noted that the inlet and outlet apertures of the fan-case and the blast-exit from the machine are all quite large, while the aperture h is very small, the result being that the outgoing blast by a species of siphon action will cause a downdraft through the passage 17., drawing the dust away from the feed.

The fan and the thrashing-cylinder are revolved in opposite directions or toward each other, the fan turning from left to right, by the belt pulleys O and P, endless belt Q, and intermeshing cog-wheels R and S, the larger one of these being provided with a crank and handle for turning it. It will be obvious, however, that my machine may be operated by steam-power or by animal-power instead of hand, if desired.

By constructing the top part of the machine as described the whole interior arrangement may be exposed to view simply by nnhooking and lifting off the rectangular top frame B, thus affording instant and easy access to the journal-boxes, fan chamber, thrashingconcave, and thrashing-cylinder.

Having thus described my invention, I and means, substantially as described, for reelailn and desire to secure by Letters Patent rating said cylinder and fan. of the United States Intestiinonytlmt' Iclaimthe foregoing as my Inamachine for thrashingand cleaningpeas own I have hereunto al'fixed my signature in 5 and beans, the combination, with the main presence of two witnesses.

fr une A, having a reinovaioie top and an in- WILLIAM HENRY GRAYSON ehned bottom contzunlng the thrashing eoncave and cylinder, of the fan-chamber and \Vilanesses: fan, the air-chmnber 11,1mvi11gan aperture 7: \VM. F. HUTCHESON, 10 intermediate of the fan-chamber and concave, \V. N. HUTCHESON. 

